xref: /petsc/src/snes/tutorials/output/ex17_ge_q1_gdsw.out (revision 52446cc723085e0744f602c8b3df1001d0d0ab4d)

  0 SNES Function norm 0.467874
    0 KSP Residual norm 0.216401
    1 KSP Residual norm 0.0553349
    2 KSP Residual norm 0.0212547
    3 KSP Residual norm 0.0048176
    4 KSP Residual norm 0.0021287
    5 KSP Residual norm 0.00100956
    6 KSP Residual norm 0.000532496
    7 KSP Residual norm 0.000209007
    8 KSP Residual norm 0.000139492
    9 KSP Residual norm 0.000173401
   10 KSP Residual norm 0.000225398
   11 KSP Residual norm 0.000178771
   12 KSP Residual norm 0.000135484
   13 KSP Residual norm 0.00012088
   14 KSP Residual norm 0.000101858
   15 KSP Residual norm 5.80403e-05
   16 KSP Residual norm 3.43514e-05
   17 KSP Residual norm 3.29735e-05
   18 KSP Residual norm 1.64922e-05
   19 KSP Residual norm 1.48312e-05
   20 KSP Residual norm 1.25128e-05
   21 KSP Residual norm 8.36054e-06
   22 KSP Residual norm 4.02426e-06
   23 KSP Residual norm 4.6593e-06
   24 KSP Residual norm 5.72482e-06
   25 KSP Residual norm 4.00111e-06
   26 KSP Residual norm 3.46507e-06
   27 KSP Residual norm 3.96412e-06
   28 KSP Residual norm 3.05863e-06
   29 KSP Residual norm 2.09907e-06
KSP Object: 5 MPI processes
  type: cg
  maximum iterations=10000, initial guess is zero
  tolerances: relative=1e-05, absolute=1e-50, divergence=10000.
  left preconditioning
  using NATURAL norm type for convergence test
PC Object: 5 MPI processes
  type: mg
    type is MULTIPLICATIVE, levels=2 cycles=v
      Cycles per PCApply=1
      Using Galerkin computed coarse grid matrices
  Coarse grid solver -- level 0 -------------------------------
    KSP Object: (mg_coarse_) 5 MPI processes
      type: preonly
      maximum iterations=10000, initial guess is zero
      tolerances: relative=1e-05, absolute=1e-50, divergence=10000.
      left preconditioning
      not checking for convergence
    PC Object: (mg_coarse_) 5 MPI processes
      type: redundant
        First (color=0) of 5 PCs follows
        KSP Object: (mg_coarse_redundant_) 1 MPI process
          type: preonly
          maximum iterations=10000, initial guess is zero
          tolerances: relative=1e-05, absolute=1e-50, divergence=10000.
          left preconditioning
          not checking for convergence
        PC Object: (mg_coarse_redundant_) 1 MPI process
          type: cholesky
            out-of-place factorization
            tolerance for zero pivot 2.22045e-14
            matrix ordering: nd
            factor fill ratio given 5., needed 1.
              Factored matrix:
                Mat Object: (mg_coarse_redundant_) 1 MPI process
                  type: seqsbaij
                  rows=50, cols=50
                  package used to perform factorization: petsc
                  total: nonzeros=1275, allocated nonzeros=1275
          linear system matrix, which is also used to construct the preconditioner:
          Mat Object: 1 MPI process
            type: seqaij
            rows=50, cols=50
            total: nonzeros=2500, allocated nonzeros=2500
            total number of mallocs used during MatSetValues calls=0
              using I-node routines: found 10 nodes, limit used is 5
      linear system matrix, which is also used to construct the preconditioner:
      Mat Object: 5 MPI processes
        type: mpiaij
        rows=50, cols=50
        total: nonzeros=2500, allocated nonzeros=2500
        total number of mallocs used during MatSetValues calls=0
          using nonscalable MatPtAP() implementation
          using I-node (on process 0) routines: found 2 nodes, limit used is 5
  Down solver (pre-smoother) on level 1 -------------------------------
    KSP Object: (mg_levels_1_) 5 MPI processes
      type: chebyshev
        Chebyshev polynomial of first kind
        eigenvalue targets used: min 0.237828, max 2.61611
        eigenvalues estimated via cg: min 0.0240432, max 2.37828
        eigenvalues estimated using cg with transform: [0. 0.1; 0. 1.1]
        KSP Object: (mg_levels_1_esteig_) 5 MPI processes
          type: cg
          maximum iterations=10, initial guess is zero
          tolerances: relative=1e-12, absolute=1e-50, divergence=10000.
          left preconditioning
          using PRECONDITIONED norm type for convergence test
        PC Object: 5 MPI processes
          type not yet set
          PC has not been set up so information may be incomplete
        estimating eigenvalues using a noisy random number generated right-hand side
      maximum iterations=2, nonzero initial guess
      tolerances: relative=1e-05, absolute=1e-50, divergence=10000.
      left preconditioning
      not checking for convergence
    PC Object: (mg_levels_1_) 5 MPI processes
      type: bjacobi
        number of blocks = 5
        Local solver information for first block is in the following KSP and PC objects on rank 0:
        Use -mg_levels_1_ksp_view ::ascii_info_detail to display information for all blocks
        KSP Object: (mg_levels_1_sub_) 1 MPI process
          type: preonly
          maximum iterations=10000, initial guess is zero
          tolerances: relative=1e-05, absolute=1e-50, divergence=10000.
          left preconditioning
          not checking for convergence
        PC Object: (mg_levels_1_sub_) 1 MPI process
          type: icc
            out-of-place factorization
            0 levels of fill
            tolerance for zero pivot 2.22045e-14
            using Manteuffel shift [POSITIVE_DEFINITE]
            matrix ordering: natural
            factor fill ratio given 1., needed 1.
              Factored matrix:
                Mat Object: (mg_levels_1_sub_) 1 MPI process
                  type: seqsbaij
                  rows=28, cols=28
                  package used to perform factorization: petsc
                  total: nonzeros=226, allocated nonzeros=226
          linear system matrix, which is also used to construct the preconditioner:
          Mat Object: (mg_levels_1_sub_) 1 MPI process
            type: seqaij
            rows=28, cols=28
            total: nonzeros=424, allocated nonzeros=424
            total number of mallocs used during MatSetValues calls=0
              using I-node routines: found 10 nodes, limit used is 5
      linear system matrix, which is also used to construct the preconditioner:
      Mat Object: 5 MPI processes
        type: mpiaij
        rows=252, cols=252
        total: nonzeros=11872, allocated nonzeros=11872
        total number of mallocs used during MatSetValues calls=0
          has attached near null space
          using I-node (on process 0) routines: found 10 nodes, limit used is 5
  Up solver (post-smoother) same as down solver (pre-smoother)
  linear system matrix, which is also used to construct the preconditioner:
  Mat Object: 5 MPI processes
    type: mpiaij
    rows=252, cols=252
    total: nonzeros=11872, allocated nonzeros=11872
    total number of mallocs used during MatSetValues calls=0
      has attached near null space
      using I-node (on process 0) routines: found 10 nodes, limit used is 5
  1 SNES Function norm 5.93822e-06